Submitting my feeds is almost impossible, if anyone verifies that the feeds validate or not.

Yours aren't validating either:
http://feedvalidator.org/check.cgi?url=htt...rssout%26id%3D1

Yes, i get have that problem as well when using the ssi.php. The best way would be to use the Export Topic Feed, which allows to to select which forum to export. An example, @ the bottom of www.mxweb.co.uk/forums.

That's what it is, the export feed. Not ssi.php